“What makes you think you have the right to know?” asks Danny DeVito in a witty, ironic public service announcement by the political action committee sponsored by consumer advocacy group Food & Water Watch in support of Proposition 37. California’s ballot initiative to label genetically engineered foods. A diverse, all-star cast joins DeVito in the “Right to Know” PSA, including Bill Maher, Dave Matthews, Jillian Michaels, Emily Deschanel, John Cho, Glenn Howerton, Kaitlin Olson, KaDee Strickland and Kristin Bauer van Straten.